sertit.rasters.set_nodata¶
- set_nodata(xda: xarray.core.dataarray.DataArray, nodata_val: Union[float, int]) xarray.core.dataarray.DataArray [source]¶
Set nodata to a xarray that have no default nodata value.
In the data array, the no data will be set to np.nan. The encoded value can be retrieved with xda.rio.encoded_nodata.
>>> A = xr.DataArray(dims=("x", "y"), data=np.zeros((3,3), dtype=np.uint8)) >>> A[0, 0] = 1 <xarray.DataArray (x: 3, y: 3)> array([[1, 0, 0], [0, 0, 0], [0, 0, 0]], dtype=uint8) Dimensions without coordinates: x, y >>> A_nodata = set_nodata(A, 0) <xarray.DataArray (x: 3, y: 3)> array([[ 1., nan, nan], [nan, nan, nan], [nan, nan, nan]]) Dimensions without coordinates: x, y